Which of the following statements about solid friction is/are correct?

I. Friction depends on the nature of the surfaces in contact
II. Friction depends on the area of contact
III. Friction always acts in the direction of motion.

Similar Questions

In a fission process, the decrease in mass is 0.01%. How much energy could be obtained from the fiss...

The linear expansivity of brass is 2 x 10$^{-5}$  $^oC^{-1}$. If the volume of piece o...

What flows to the positively charged conductor by connecting it to the earth? ...

The temperature gradient across a copper rod of thickness 0.02m, maintained at two temperature junct...

If the attraction of the sun is suddenly ceased, the earth would continue to move in a straight line...

The compressed regions and the space-out regions in longitude wave are refers to as ...

A vibrator of frequency 60Hz is used in generating transverse stationary waves in a long thin wire, ...

Which of the following can be described as high tension transmission? ...

The specific latent heat of vaporization of a substance is always? ...

Fusion is not usually used for generating electric power because ...